Hi, I've been shooting cap locks for quite a while and I recently managed to get for a fair price a Kentucky flintlock pistol clone (mady in the 70-ties by Armi Jager company). It is immensely enjoyable to shoot. It ignites pretty much every time if used with a sharp flint, but the flints don't last as long as I think they should based on what I read. The original edge on an english black flint lasts maybe 3-5 shots, then the flint is getting shorter with almost every shot until after 10-15 shots(total) it is pretty much done for. Sometimes I can knapp it in place using an often described technique to get up to 5 more shots from it, but that's it. I also often get flints shattering, breaking in half lengthwise etc. The lock is made for 5/8ths flints, but those last only few shots before they break completely. The numbers I mention above are achieved with half inch flints. They are a bit too small, but they seem to be a lot more resilient. I recently started thinking that the force that keeps the pan closed is a bit too much. I haven't measured it, but it feels close to 8-9 pounds all the way. Also, the frizzen snaps open maybe a third of the times it is fired. Most of the time after ignition it ends up on top of the hammer and I have to open it by hand before I reload. Unfortunately I haven't got another flintlock to compare it with. Can anyone suggest a book, or a website that explains how to tune the lock with the right force? I could file and polish the part of the frizzen that engages the spring and the spring itself, but I need some method to determine how much force is the right amount. I would really like to get 40-50 shots out of a flint like some people report.